Method for simulating the deformation, after implantation, of an implantable medical device

Method for simulating the deformation, after implantation, of an implantable medical device, called IMD, in a natural cavity, from a three-dimensional numerical model of a wall of the cavity,

• the method comprising the following steps implemented by a processing unit:
• i. determining an intermediate deformation state of a numerical IMD representing the IMD, the numerical IMD at the intermediate deformation state being deformed as a function of a shape of the wall model while remaining included in said shape,
• ii. calculating of a mechanical equilibrium state of the numerical IMD from the intermediate deformation state, the step of calculating comprising calculating mechanical stresses undergone by the numerical IMD in the intermediate deformation state which are a function of a mechanical behaviour of the numerical IMD and a mechanical behaviour of the three-dimensional numerical model of a wall of the cavity, and also comprising the relaxation of said stresses,
• wherein a mechanical behaviour of the numerical IMD, and/or a rest state of the numerical IMD, during the step determining the intermediate deformation state is not identical respectively to the mechanical behaviour of the numerical IMD, and/or to a rest state of the numerical IMD, during step of calculating the mechanical equilibrium, wherein the calculated mechanical equilibrium state corresponds to the simulated deformation of the IMD after implantation.